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Test your basic knowledge |
Dairy Cattle And Reproduction
Start Test
Study First
Subjects
:
industries
,
dairy
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Help to signal hormone levels which we need both in the brain right next to each other.
estrous
hypothalamus and pituitary gland
burdizzo
normal presentation of the fetus
2. Urinary calculi.
reason for seasonal breeding periods
kidney stones also called ________ ___________ can develop in the sigmoid flexure
estrus
functions of progestrone
3. What about the sperm for a bull which has been castrated but still has testicles?
scrotum
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
epididymis: definition - 3 parts - 4 functions
testosterone
4. Days which have increasing daylight hours
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5. 147 days
ewe gestation
accessory sex glands
oviducts
ewe ovulation
6. 24 hours before end of estrus cycle
mare ovulation
leydid or interstitial cells
sow estrus
cow estrus
7. Milk ~305 days - dry 60 days prior to calving
Dairy Cattle milking schedule
scrotal circumference (BSE)
vulva
cow estrus cycle
8. (male) pushes the testes upward toward the body for warmth or protection
vulva
vagina
dartos muscle
Dairy Cattle milking schedule
9. When she is pregnant in her last trimester because she needs the energy to carry around and deliver the calf. and when the calf is born because the cow needs the fat to be deposit it into her milk for the calf's energy stores.
why does the cow need fat deposits during pregnancy?
uterus
sertoli cells
vagina
10. Reproduction. more offspring leads to more feed costs - but is offset by reproduction numbers
seasonally polyestrous
Where livelihood is in agriculture
testis (gonads)
Bull's fibro-elastic penis
11. S-shaped inside body - relaxes to be exposed for breeding. Disadvantges: muscles weaken with age - cannot always hold it in - exposed to harsh outside conditions or stepped on.
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12. (LH) stimulates the Leydig cells to produce testosterone
dartos muscle
Follical Stimulating in males
Culls bulls earlier (2 reasons)
Lutinizing Hormone in males
13. 283 days
Blood
epididymis: definition - 3 parts - 4 functions
cow gestation
testis (gonads)
14. Not under a timeline - cow can not be sold as steak
Grading choice
Reasons for gestation length being affected
age and castration
ewe ovulation
15. Why Dairy calves are fed powdered milk.
Hormones from both the fetus and the mom.
sertoli cells
1. more cost effective - 2. powdered milk is in excess production
dry matter and water
16. Check feet and legs - look for masculine traits in build such as crest and muscling
Sperm growth rate
Reasons for gestation length being affected
visual evaluation (BSE)
purpose of Breeding Soundness Exam (BSE) for males
17. Start of the reproductive tract for the female. located outside of the body
dairy cattle pregnancy check
growth lost from castration methods (knife & band)
spermatogenesis
vulva
18. To remove/separate testicles from animal's body before animal reaches puberty
castration
cryptorchid
Grading choice
Bull's fibro-elastic penis
19. Birthing process (termination of gestation)
Sperm growth rate
sow estrus
Parturition
purpose of Breeding Soundness Exam (BSE) for males
20. Failure to have both testis (gonads) descend
Sperm survival specs
cryptorchid
butterfat
age and castration
21. BST given to dairy cattle makes the mammary gland more persistent - helps produce more milk. good as Long-term because it does not cause cow to bulk up - provides more milk/cow Which means less cows needed - less cows need to be given feed - lower co
effects of BST
sigmoid flexure
ewe gestation
behavioral signs of estrus
22. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off
elastrator
growth lost from castration methods (knife & band)
what has to happen for males for copulation to occur
mare gestation
23. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.
scrotal circumference (BSE)
pelvis
dartos muscle
estrous
24. Completes uterine growth initiated by estrogen and prepares the uterus for nourishment of developing embryo if pregnancy occurs - supports pregnancy by maintaining quiescent state of reproductive tract and suppresses mating behavior - prevents ovulat
cow estrus
#1 cost in production
functions of progestrone
4 major reasons for culling dairy cows
25. Depository for semen during insemination. where urine leaves the body
Dairy Cattle Lactation (standard)
vagina
seasonally polyestrous
Avg. bull specs
26. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge
penis proper
castration
behavioral signs of estrus
#1 cost in production
27. Duct which connects epididymis to urethra of the penis. transports sperm at ejaculation. cut to sterilize male.
van deferens
cryptorchid
cow ovulation
mare estrus
28. 14-19 (17) days
Follical Stimulating in males
things to check for in a breeding soundness exam (BSE)
Lutinizing Hormone in males
ewe estrus cycle
29. Check feet and legs - look for masculine traits in build such as crest and muscling
sertoli cells
1. more cost effective - 2. powdered milk is in excess production
visual evaluation (BSE)
cervix
30. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has
rectal palpation (BSE)
ewe's estrous cycle
Where livelihood is in agriculture
hormones
31. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days
prostate gland
epididymis: definition - 3 parts - 4 functions
burdizzo
dartos muscle
32. 1-2 days
why does the cow need fat deposits during pregnancy?
#1 cost in production
Sperm growth rate
ewe estrus
33. Parturition is controlled by...
behavioral signs of estrus
eminal vesicles
Hormones from both the fetus and the mom.
Grading choice
34. Microscopic - make sure not sterile - very few bulls are actually tested
Sperm survival specs
prostaglandin
semen evaluation (BSE)
vagina
35. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.
dartos muscle
reasons for castration
accessory sex glands
penis sizes vs delivering methods
36. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days
monestrous
accessory sex glands
mare ovulation
epididymis: definition - 3 parts - 4 functions
37. Contains and regulates the temp of the testes for sperm production
Sperm survival specs
sow ovulation
scrotum
cow estrus
38. Knife-loose ~1wk of growth. band-loose ~2wks of growth.
things to check for in a breeding soundness exam (BSE)
monestrous
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
growth lost from castration methods (knife & band)
39. Milk is 15% ________ and 85% __________.
semen evaluation (BSE)
hormones
dry matter and water
spermatogenesis
40. (male) pushes the testes upward toward the body for warmth or protection
dartos muscle
sow estrus cycle
#1 cost in production
elastrator
41. Can survive ~7 days in cow. vast majority <48 hours
castration
Sperm survival specs
Sperm growth rate
vulva
42. Allows extension of penis without fibro-elastic penis
burdizzo
sigmoid flexure
estrus
monorchid
43. Scar tissue plugs up chambers of udder
dartos muscle
mastitis
cow ovulation
eminal vesicles
44. Implies the amount of estrogen production
urethra
mare gestation
Blood
femininity of a heifer
45. Duct through penis that carries sperm and urine
mare gestation
urethra
Where livelihood is in agriculture
Dairy Cattle Gestation
46. Sperm production
spermatogenesis
oviducts
ewe ovulation
epididymis: definition - 3 parts - 4 functions
47. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).
hormones
retractor muscles
sigmoid flexure
#1 cost in production
48. Superior genes are _______ to multiply
penis proper
libido test (BSE)
Dairy calves are removed from cow at birth to...
Hard
49. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.
4 major reasons for culling dairy cows
elastrator
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
penis sizes vs delivering methods
50. Urinary calculi.
penis proper
kidney stones also called ________ ___________ can develop in the sigmoid flexure
retractor muscles
Blood